f(a-5)=-3x+21

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Solution for f(a-5)=-3x+21 equation:


Simplifying
f(a + -5) = -3x + 21

Reorder the terms:
f(-5 + a) = -3x + 21
(-5 * f + a * f) = -3x + 21

Reorder the terms:
(af + -5f) = -3x + 21
(af + -5f) = -3x + 21

Reorder the terms:
af + -5f = 21 + -3x

Solving
af + -5f = 21 + -3x

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '5f' to each side of the equation.
af + -5f + 5f = 21 + 5f + -3x

Combine like terms: -5f + 5f = 0
af + 0 = 21 + 5f + -3x
af = 21 + 5f + -3x

Divide each side by 'f'.
a = 21f-1 + 5 + -3f-1x

Simplifying
a = 21f-1 + 5 + -3f-1x

Reorder the terms:
a = 5 + 21f-1 + -3f-1x

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